31240042223212 has 6 divisors (see below), whose sum is σ = 54670073890628. Its totient is φ = 15620021111604.

The previous prime is 31240042223183. The next prime is 31240042223233. The reversal of 31240042223212 is 21232224004213.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3905005277898 + ... + 3905005277905.

Almost surely, 2^{31240042223212} is an apocalyptic number.

It is an amenable number.

31240042223212 is a deficient number, since it is larger than the sum of its proper divisors (23430031667416).

31240042223212 is a wasteful number, since it uses less digits than its factorization.

31240042223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810010555807 (or 7810010555805 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31240042223212 its reverse (21232224004213), we get a palindrome (52472266227425).

The spelling of 31240042223212 in words is "thirty-one trillion, two hundred forty billion, forty-two million, two hundred twenty-three thousand, two hundred twelve".